I'm 34, been developing web stuff for over 10 years now, and started using JQuery back when John Resig was still personally meeting & greeting people who were using JQuery at meetups.
I'm pretty firmly in the "You don't need JQuery camp", and the reason is that you don't need JQuery now. It was an amazing piece of software when it came out; it made rich JS development not only practical, but easy, without worrying about cross-browser issues. But it succeeded. Resig's goal - from very early on, at least as soon as he started to working at Mozilla - was to get JQuery baked into browsers, and he's largely done that. We got querySelectorAll. We got a unified event model that all browsers support. We got FormData. We got a consistent box model, and consistent getComputedStyle() behavior. We got animations and transitions, and the native versions even run on the GPU for fast mobile performance.
As a result, most of the problems that JQuery solved just aren't problems in modern web development. Cross-browser issues are minor and getting smaller every day. Selectors are baked in. Animations and transitions are CSS one-liners, rather than needing to spin up a setTimeout loop and manually calculate the delta in the property each tick.
That doesn't deny the historical significance of JQuery, or just how much it improved web development back in 2007. But we build apps for the world we live in today, and today, JQuery gives you some minor programming convenience in exchange for 30K of download size and a bunch of layout thrashing if you use its CSS or dimensions methods.
I'm pretty firmly in the "You don't need JQuery camp", and the reason is that you don't need JQuery now. It was an amazing piece of software when it came out; it made rich JS development not only practical, but easy, without worrying about cross-browser issues. But it succeeded. Resig's goal - from very early on, at least as soon as he started to working at Mozilla - was to get JQuery baked into browsers, and he's largely done that. We got querySelectorAll. We got a unified event model that all browsers support. We got FormData. We got a consistent box model, and consistent getComputedStyle() behavior. We got animations and transitions, and the native versions even run on the GPU for fast mobile performance.
As a result, most of the problems that JQuery solved just aren't problems in modern web development. Cross-browser issues are minor and getting smaller every day. Selectors are baked in. Animations and transitions are CSS one-liners, rather than needing to spin up a setTimeout loop and manually calculate the delta in the property each tick.
That doesn't deny the historical significance of JQuery, or just how much it improved web development back in 2007. But we build apps for the world we live in today, and today, JQuery gives you some minor programming convenience in exchange for 30K of download size and a bunch of layout thrashing if you use its CSS or dimensions methods.